Changeset cfdeedc in mainline for kernel/arch/sparc64


Ignore:
Timestamp:
2018-10-21T23:12:23Z (7 years ago)
Author:
Jiří Zárevúcky <zarevucky.jiri@…>
Branches:
lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export
Children:
bf05c74
Parents:
d59718e
git-author:
Jiří Zárevúcky <zarevucky.jiri@…> (2018-10-21 22:53:48)
git-committer:
Jiří Zárevúcky <zarevucky.jiri@…> (2018-10-21 23:12:23)
Message:

Keep kernel in ELF format

By keeping kernel in an ELF file (instead of converting it to
a flat binary), we can use the information it contains, like
symbol table and debug info.

We can also later implement more advanced functionality, like
loading kernel at multiple discontiguous blocks, or loading
a position-independent kernel at a randomized address.

Currently the functionality is quite restricted, to keep changes
to a minimum. Code in boot/generic/src/kernel.c validates that
the kernel image was built with the same addresses as the boot
loader uses, giving an extra level of sanity checking compared
to a flat binary.

Location:
kernel/arch/sparc64
Files:
2 edited

Legend:

Unmodified
Added
Removed
  • kernel/arch/sparc64/Makefile.inc

    rd59718e rcfdeedc  
    2727#
    2828
    29 BFD_NAME = elf64-sparc
    30 BFD_ARCH = sparc
    31 BFD = binary
    3229
    3330COMMON_CFLAGS += -m64 -mcpu=ultrasparc -mcmodel=medlow -mno-fpu
  • kernel/arch/sparc64/_link.ld.in

    rd59718e rcfdeedc  
    1212
    1313SECTIONS {
    14         .image VMA: AT (LMA) {
    15                 kernel_load_address = .;
     14        kernel_load_address = VMA;
    1615
     16        .image (VMA + SIZEOF_HEADERS): AT (LMA + SIZEOF_HEADERS) {
    1717                ktext_start = .;
    1818                *(K_TEXT_START)
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